Which of the following best defines one mole of a substance?

a. mass, in grams, of each particle of the substance.
b. mass, in grams, of the nuclear us of the substance’s atoms.
c. amount of substance present in one atom of the substance
d. amount of substance present in avogadro‘s number of particles of the substance

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

Plz mark brainliest 30 points1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s.2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

How many moles of bromine are needed to produce 3.23 moles of potassium bromide